<template>
  <div class="app-container">
    <mt-header fixed title="顶部导航栏">
      <span slot="left" @click="goBack" v-show="flag">
        <mt-button icon="back">返回</mt-button>
      </span>
    </mt-header>
    <transition>
      <router-view></router-view>
    </transition>
    <nav class="mui-bar mui-bar-tab">
      <router-link class="mui-tab-item-hcz" to="/home">
        <span class="mui-icon mui-icon-home"></span>
        <span class="mui-tab-label">首页</span>
      </router-link>
      <router-link class="mui-tab-item-hcz" to="/member">
        <span class="mui-icon mui-icon-contact"></span>
        <span class="mui-tab-label">会员</span>
      </router-link>
      <router-link class="mui-tab-item-hcz" to="/shopcar">
        <span class="mui-icon mui-icon-extra mui-icon-extra-cart">
          <span class="mui-badge" id="badge">{{$store.getters.getAllCount}}</span>
        </span>
        <span class="mui-tab-label">购物车</span>
      </router-link>
      <router-link class="mui-tab-item-hcz" to="/search">
        <span class="mui-icon mui-icon-search"></span>
        <span class="mui-tab-label">搜索</span>
      </router-link>
    </nav>
  </div>
</template>

<script>
  export default {
      data(){
          return {
            flag: false
          }
      },
      created(){
          this.flag = this.$route.path !== "/home";
      },
      methods: {
          goBack(){
            this.$router.go(-1);
          }
      },
      watch: {
          "$route.path": function(newVal){
              this.flag = newVal !== "/home";
          }
      }
  }
</script>


<style lang="less" scoped>
  .mint-header{
    z-index: 99;
  }
.app-container{
  padding-top: 40px;
  padding-bottom: 50px;
  overflow-x: hidden;
}
  .v-enter{
    opacity: 0;
    transform: translateX(100%);
  }
.v-leave-to{
  opacity: 0;
  transform: translateX(-100%);
  position: absolute;
}
  .v-enter-active,.v-leave-active{
    transition: all .5s ease;
  }
.mui-bar-tab .mui-tab-item-hcz.mui-active {
  color: #007aff;
}
.mui-bar-tab .mui-tab-item-hcz {
  display: table-cell;
  overflow: hidden;
  width: 1%;
  height: 50px;
  text-align: center;
  vertical-align: middle;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: #929292;
}
.mui-bar-tab .mui-tab-item-hcz .mui-icon {
  top: 3px;
  width: 24px;
  height: 24px;
  padding-top: 0;
  padding-bottom: 0;
}
.mui-bar-tab .mui-tab-item-hcz .mui-icon ~ .mui-tab-label {
  font-size: 11px;
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
}
</style>
